Coal-mining machine.



J'. KUR TZ & T. HOGHRITER.

COAL MINING MACHINE. API'LICLAIIGK FZLED OCT. 9.11 03 Patented May 10, 1910.

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Sum for:

J. KURTZ & T. HOCHRITER.

COAL mums M! CHINE.

APFLIOATIOK FILED OUT. 9,1908. 957,510, Patented May 10,1910.

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J. KUR'LZ (s; T. HUCHRITER.

COAL MINING MACHINE. APPLICATION mum on 9.19m.

Patented May 10, 15'? J. KURTZ & T. HOCHRITER.

COAL MINXNG mcnms. AI'PLIOATXON FILED 0011;), 1908. 4 957,510, Patented May10,1910.

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COAL MINING MACHINE.

APPLICATION FILED OUT. 9, 190a.

Patented May 10,1910. 1

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. APPLIOATIJN TILED OUT. 9, 1908.

Patented May 10, 1910.

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.. I I l JACOB KURTZ, CI? DARRAGH,

AND THEODORE HGGHRITER, OF GREENSBUBG, PENNSYLVANIA.

COAL-MINING MACHINE.

Specification of Letters Patent.

Patented Ma 10,1910.

Application filed October 9. 1908. Serial No. 456,899.

To all whom it "may concern:

live view of the cutter. Fig. l8 is a. per- Be it known that we, Jacon KURTZ and I spective view of a retaining block cooperthis kind in which the cutters are advanced into the vein of coal by a otary. boring movement, and also inored in an are. thus cutting laterally after penetrating the deeired depth, the boring and swinging movements hen); under independent control of the operator.

A further object of the invention is to provide for vertical adjustment of their-ntters, at) that they can cut. close to the tloor of the mine, or can be elevated to pass over obstructions.

The invention consinls inthe novel fea titres of eotwtruction hereinafter t escrihed. pointed out in the claim and shown in the. :m-otnpanying drawings, in which Figure. l i\ a plan View, a inc-aide earriage being in section. Fig. .2 is a std" view partly hrolten away. Fig. 3 is a vertical .tudinal section on the line li it of- Fig. t. Fig. -1- is a central transverse section on the line -t---t of Fig. t. Fig. 5 is a plan view of the carriage. Fig. i is a horizontal section tint'mggh the cutting mechanism on the line 'ti of Fig. l. Fig. 7 is a'vertical section. enlarged. showing onehalt' of an end of the nmt-hine. Figs and are detail secti ns ota truck wheel. Fig.1. it) is a side elevation ol a lt'ey (or use with the truck whecl l ig. il isa detail section through the carriage. .l"i 1;- is a detail vertical section through one. of the supporting wheels allowing the eonstrtu'tion ot' the supports. Fig. 13 is a plan View Sho\\'in; the. cutter.- in a cutting. position. Fig. it is a d tail plan view of the rnttin; hlades car llt' l hr a spiral flange. Fig. la is a detail side \'lt-\\' of a potlitm of said flange and cutters. Fig. 1G is a perspective view ol a cutter retaining block. Fig. li' is a perspecating with the. block shown in Fig. 16. Fig. 19 is a vertical section through a casting detached from the machine.

In hese drawing; 1 represents a frame, mounted on wheels 2. The upper side members of the frame 1 form a track on which slides a carriage The frame 1 has its ends braced liy end plates 4.. The frame 1 forms a track, the wheels 2, four in number, being provided with tread portions and flanges for traveling on a mine track. The wheels are provided with spurs :2 which work through the tread for use when the truck is run on. the floor of the mine. To throw these spurs in and out the following mechanism is provided for each wheel 2. \Yithin each wheel is placed a cam Wheel 6 having as many pariphe 'al cam portions as there are apurs. The. wheels are slotted as shown at T and perforations S are formed in the can ti to l'tglnltl with the slots T. B engaging the opening 8 with a. Suitable implement. such as is shown at G in Fig. 10, the. cama can he turned. bprings U draw the spurs inwardly when the cam portions are shifted from hcneath the spurs, and the spurs are tori-ed outwardly again when the calm t3 are lit-ought. hack to the position hown in Fig. S. The truck wheels are mounted on stulr shafts It), and worm gears it are formed on all the wheel hnhs. A. sleeve 1:2 terminates in a. bifurcated bracket. which llli'lth'ts the worm gear 11 on one side, eat-h wheel being )rovided with one of these sleeves. The shatts 10 are jonrnaled in the hraclt'e s of the. sleeves" 12 and it will be obions that rotation of he sleeves and of the hrai-ltt-t will turn the wheels. In this manner the device is tet-red or guided when running on the mine tloor. To ell'ect. this turning: ntorententof the sleeve. and to rotate the wheels :2 to give. a forward or rearward morenn-nt to the track the following meclr aniant is employed: shaft. '13 provided wiih a worm rm...- thronghand'is eycdin the sleeve 12. the worm or" the shaft meshing with the worm reatll of the wheel huh. 'lriangnlar shaped castings H are fitted into the cornorx ot' the frame 1 and are provided lZltll with a longitudinal t me H". the low r portion of whilh ot greater diameter than the upper. The sleeve l2 tits in thi larger lower portion, while the worm 50 i by clutches either shaft may be driven indeshaft. 13 extends upwardly through the casteled gears 19. .Tnese shafts each carry a worm gear meshing with worms 21 carried b a longitudinall extending shaft 22. The s raft 22 is gearc for two speeds and for rotation in opposite directions by means of small, slidable high speed gears 23 and larger slidable iow speed gears 24-, said gears "being shifted by a series of shifting levets 2 5.

The 'carringe 3 carries shafts 26 rotating in opposite directions and carrying large gears 27 meshing respectively with the high speed gears 23 and gears 28 meshing with the low speed gears 24. When the frame 1 is to remain stationary, both sets of gears are disengaged and the machinery nereafter described may be operated without driving the shaft 22. It will he understood that the ars 27 and 28 are carried by, but below the top of, the carriage 3.

To drive the shafts 2G, beveled gears 2f) T on the adjacentsides of the gears 28 mesh -with a beveled pinion 30 carried by a de pending shaft 31. At its upper end this shaft carries a loose'gear 32 and a friction -ring or clutch 32 operated by a pivoted hand lever A motor 34 is mounted on the carriage,

and the motor may be of any type, and the motor shaft carries a bevel pinion 35 which meshes with a beveled gear A small gear wheel 37 fixed to or integral with the beveled gear 36 meshes with the loose gear 32 and also with a car wheel 38 loosely mounted on a central s liaft 39 and locked to said shaft by a friction clutch 39 similar to the clutch 32 and operable by a pivoted lever 40. It

I will now be obvious that by having gears 3:2

and 38 loose on their shafts and locking them I pendent of the other or both may be operated at the same time. The shaft 31 will hereafter he termed the drive shaft and the shaft 39 the cutter shaft.

Before describin the cutting mechanism, the description of t 1058 parts connected with .the frame 1 will be completed. Journaled iii the ends of said frame and adjacent its sides are. worm shafts 41 which work in threaded boxes 42 carried by the carriage.

A-transverse shaft 43 carries at its ends beveled gears 44 which mesh with keyed gears 45 earned by the worm shaft 41. Shaft 43 ia driven by means of a beveled gear 46 fixed on it and meshing with a beveled gear 47 carried by a shaft 48 on which is keyed a gear wheel 19 adapted to mesh with either of the gear wheels 29.

The cutter shaft 39 is a keyed shaft having vertical movement, and its lower the )ending portion is held loosely in a sleeve 50. blidahly held upon this sleeve is an angled casting 51 the lower horizontal portion of which extends laterally as shown at. 5:2, and atits outer end carries oppositely extending hollow arms 53 also angled, and the end portions of these arms form bearings for cutters 54. In order to rotate these cutters the shaft 39 is provided with a bevel gear which meshes with a similar gear 57 carried h r a shaft 56 journaled in the horizontal portion 52. This shallalso carries a bevel gear 58 and in the arms 53 is journaled a shaft, 59 provided with a bevel gear 60 which meshes with the gcar SS and which in turn carries bevel gears 61 meshing with bevel gears (Kl carried. by shafts (32 which extend into the cutters 5t and are secured to said cutters by any suitable means. Those cutters 5-1 are provided with spiral ribs 4 and along said ribs are fixed a large number of cutting blades (-5 the shanks of which are held in lace upon the ribs H by means of suitable blocks 66 and 66". which blocks are fastened by means of rivets and bolts to the ribs and coiipcrate in holding a cutting blade between each pair of blocks, as shown in Figs. 14 and 18 inclusive.

The vertical pol-lion of the Casting 51 has secured upon it a large gear wheel 07 and it will be obvious that by rotation of said gear wheel the casting will be rotated upon the sleeve 50 and the cutters will thus be swung in an arc. To drive the wheel 67 we provide nt the four corners of the carriage 3 toothed drums US, said drums being mounted vertically. These drums are of a sullicient length to allow for vertical movement of the casting 51 and accompanying movement of the wheel 67. Formed integral with the upper portion f each drum is a worm gear 69. Parallel shafts 71 are journaled in the carriage 3 and are provided with worm portions 70 which portions mesh respectively with the worm QCtll 69. Upon these shafts 71 are fixed cvel gears 72 which mesh with similar gears 73 carried at the ends of a shaft 74 upon which is fixed a bevel gear 75 meshing with a suitable gear carried by a shaft 70 which carries a' small gear wheel 77 which meshes with either of the gear wheels 27, the gear 77 being slidable on the shaft 76 through means of a suitable lever 7 8.

By means of the above construction the crtters are rotafid and are also capable of being swung in an varc and operated from either side of the machine, or from either end, as shown in Fig. 13. This swinging movement;v of the out-tors may be employed npon the swung with relation to the tipped of the frame.

in cutting out an initial opening, makin the cut practically square with tie and, 0 a mine tunnel so as to leave very little waste. After making such semi-circular out and cutting square to the end of the tunnel the gear wheel 77 may be disengaged and upon eversal of the travel of the carriage the cutters wiii cat. back upon a straight. line, such line being shown by the dotted line in Fig. 13. Both cutters operate at the same time so that the direction of cutting can be changed at will without the operator stopping to manipulate any clutch or other device for throwing one cutter in and the other out of ".e cutter-driving mechanism.

It is often advisable to tilt one side or other of the machine in order to incline the cutters slightly out. of a horizontal plane. To effect this tilting movement we place at each corner of the frame 1 a jack which consists of an angled casting 7 9 the lower portion of which rests upon the bracket of the sleeve 12 and the upper portion of which carries a threaded box 80 th ough which works a jack screw 81 which screw is held in brackets 82 carried by the corner portions of the frame 1. By turning this screw by means of a wrench either the side of the machine, or one particular corner, or end may be elevated, the inclination given to the cut-- ters by such elevation depending partly osition into which the cutters are ortion A slidable bar 83 is a so carried by the carriage 3, projecting beyond each end of the carriage, and in osition to strike the ends'ofthe frame 1. his bar is connected to a shiftin lever 84 which is a reverse lever which s 'fts the gear wheel 49 previously described. By means of this construction the carriage is automatically reversed as it ap roaches each end of the .frame 1, by the ar 83 striking the frame end, or if it is desired to reverse the carriage before the carria e reaches the end of the frame said reversa can be effected by means of the lever 84.

In order to adjust the cutters a lever 85 i is pivoted at one end beneath the top of the carriage 3, and extends transversely across the carriage and at. its free end 1s operated by a threaded rod 86, provided at its u per end with a. hand wh 87, which whee is above the carriage top. The lever 85 engages in any suitable manner the cast in 51 and vertical adjustment. of said lever ad usts said casting. In order that the dey vice may be run freely along a mine track to Y the place of use without operating any of.

the machinery the track wheel 2 is connected with the worm gear 11 by means of removable pins 88. By removing said pins the device may be run from place to place with all of the machinery described inoperative. To prevent the sides of the frame 1 from scrapin against sides of the mine tunnel we emp oy small side buffer wheels 89.

What we claim. is

1. In a coal cutting machine, a horizontally movable carriage,a verticallv adjustable forked sleeve traveling with said carriage, spirallyfiangcd shafts carried by the fork of the sleeve and extending laterally from the carriage, means for rotating said shafts, cutting blades held uponthe flanges of the shafts, and means for swinging said sleeve in a horizontal plane.

2. The combination withawhceled frame. of a carriage movable thereon, means for moving said carriage upon the frame, a sleeve depending from the under side of said carriage, an angled sleeve having a vertical portion slidably mounted upon the first mentioned sleeve and having a, hOIlzontal portion forked, a gear wheel fixed upon the vertical portion of said second mentioned sleeve, vertically arranged toothed drums meshing with said ear wheel, rotatable shafts carried by the ork of the second mentioned sleeve, cutters carried by said shafts, means carried by said sleeve for rotating the said shafts, and means for sliding the second mentioned sleeve upon the first mention d sleeve, the gear wheel being adapted to slide upon said toothed drums.

3. A device of the kind described comprising a sliding carria e, a motor mounted upon said carriage, a s idable vertically arrange shaft, a friction clutch ada ted to lock said shaft to said motor, an angiizd vertically adjustable sleeve, the said sleeve having a forked horizontal portion, cutters carried by the sleeve fork,-means for transmitting rotation of the slidable shaft to said cutters, said means being carried by the sleeves and fork, a gear wheel fixed to and adjustable with said sleeve, and rotatable toothed drums meshing with said gear wheel, the said gear wheel being adapted to slide vertically upon said drums during adjustment of the sleeve Witnesses:

JOHN NEWARK, O. P. Smorimw, 

